JupyterLab: Prints warning and returns empty values

[ociule]

I would have loved to use ipyparams to get the current notebook name.

However, in jupyter lab, it doesn't work:

>>> import ipyparams
Javascript Error: Jupyter is not defined
>>> ipyparams.notebook_name
''

Lab uses completely different js from notebook, that's surely why.

[ociule]

ipyparams._ipython_support is True btw.

[HCharlie]

Seems that ipyparams.raw_url returns empty as well.

[caglorithm]

Jupyter Lab support would be really appreciated!

[jeffyjefflabs]

I think due to the javascript changes in Lab, this sort of thing would have to be implemented as a Lab extension. I came across this one that does something similar.

[connorferster]

I have found that I need to run this in a Jupyter Hub environment for ipyparams to work. I am using it successfully in Jupyter Lab v3 but have encountered a similar bug where ipyparams sometimes won't work depending on how the notebook is run. See #2